Question

why is 0! =1 and 1! also 1​

Answer 1

Answer:

The Definition of a Zero Factorial

This still counts as a way of arranging it, so by definition, a zero factorial is equal to one, just as 1! is equal to one because there is only a single possible arrangement of this data set.

Answer 2

Step-by-step explanation:

because the 0 quantity is 1 and its not two or three .............

and 1 is that it consist of only one, may be it is in quantity or etc...

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